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import static org.hamcrest.CoreMatchers.*; | |
import static org.hamcrest.MatcherAssert.*; | |
import java.text.Normalizer; | |
import java.text.Normalizer.Form; | |
import java.util.Arrays; | |
import java.util.List; | |
import java.util.Objects; | |
import java.util.stream.Collectors; | |
import java.util.stream.IntStream; | |
import org.junit.Test; | |
public class NfdTest { | |
@Test | |
public void existsNfdChar1() { | |
assertThat(Normalizer.isNormalized("ポケモン", Normalizer.Form.NFC), is(true)); | |
assertThat(Normalizer.isNormalized("ポケモン", Normalizer.Form.NFC), is(false)); | |
String normalized = Normalizer.normalize("ポケモン", Normalizer.Form.NFC); | |
assertThat(Normalizer.isNormalized(normalized, Normalizer.Form.NFC), is(true)); | |
assertThat(normalized, is("ポケモン")); | |
} | |
private static final List<Normalizer.Form> FORMS = Arrays.asList(Form.values()); | |
private Form detectNormalization(String s) { | |
return FORMS.stream().map(form -> Normalizer.isNormalized(s, form) ? form : null) | |
.filter(Objects::nonNull).findFirst().get(); | |
} | |
@Test | |
public void existsNfdChar2() { | |
String str = "ポケモンポケモン"; | |
System.out.println(String.join("\n", str.codePoints().mapToObj(codepoint -> { | |
String s = String.valueOf(Character.toChars(codepoint)); | |
return s + " : " + detectNormalization(s).name(); | |
}).collect(Collectors.toList()))); | |
/* | |
ポ : NFC | |
ケ : NFD | |
モ : NFD | |
ン : NFD | |
ホ : NFD | |
゚ : NFD | |
ケ : NFD | |
モ : NFD | |
ン : NFD | |
*/ | |
} | |
@Test | |
public void existsNfdChar3() { | |
String str = "ポケモンポケモン"; | |
System.out.println(String.join("\n", IntStream.range(0, str.length()).mapToObj(index -> { | |
String s = String.valueOf(str.charAt(index)); | |
return s + " : " + detectNormalization(s).name(); | |
}).collect(Collectors.toList()))); | |
/* | |
ポ : NFC | |
ケ : NFD | |
モ : NFD | |
ン : NFD | |
ホ : NFD | |
゚ : NFD | |
ケ : NFD | |
モ : NFD | |
ン : NFD | |
*/ | |
// こっちでも変わらない | |
System.out.println(String.join("\n", str.chars().mapToObj(codepoint -> { | |
String s = String.valueOf(Character.toChars(codepoint)); | |
return s + " : " + detectNormalization(s).name(); | |
}).collect(Collectors.toList()))); | |
/* | |
ポ : NFC | |
ケ : NFD | |
モ : NFD | |
ン : NFD | |
ホ : NFD | |
゚ : NFD | |
ケ : NFD | |
モ : NFD | |
ン : NFD | |
*/ | |
} | |
} |
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